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padilas [110]
3 years ago
8

Which object would have a LARGER gravitational force acting upon it? (assume the objects are at the same height above the Earth.

)
A) 5 kg block of wood
B) 100 kg person
C) 412 kg motorcycle
D) 2540 kg elephant
Physics
2 answers:
juin [17]3 years ago
3 0
It would be D because there is more gravitational forces acting on it than a small block of wood 
Juli2301 [7.4K]3 years ago
3 0

If the objects are all at the same distance from the center
of the Earth, then the gravitational forces between the Earth
and each object only depend on the mass of each object. 
Those forces are least for the 5kg object, and greatest for
the 2,540kg object. 

The gravitational force that attracts each object toward the
center of the Earth is typically referred to as the object's "weight".

It's important to know that there's another force of gravity ... the one
that attracts the Earth toward the object.  And that one is equal to
the object's weight, but pulls in the opposite direction.

Your weight on the Earth is equal to the Earth's weight on you.

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An object attached to one end of a spring makes 20 complete vibrations in 10s. Its frequency is:
Alexxandr [17]

Answer:

0.50 s

Explanation:

4 0
3 years ago
If something is 50% efficient, how many joules of wasted energy will there be if 750J of energy is put in?
evablogger [386]

Answer:

375J of wasted energy

Explanation:

Efficiency=work output/work input×100%

50=w.o/750×100

750×50=100w.o

w.o=750×50/100

w.o=75×5

w.o=375J

Wasted energy=750J-375J

=375J

Aliter

If the machine is 50% efficient then it is also 50% inefficient

50%×750J=375J

5 0
3 years ago
In this section of a circuit, a current of 2.0 A flows across R1. What is the current across R2? Let R1 = 4.0 ohm, R2 = 8.0 ohm,
Liono4ka [1.6K]

Answer:

I=1A

Explanation:

In parallel combination voltage is same

In R1

V=IR

V=2×4

V=8V

In R2

V=IR

I=V/R

I=8/8

I=1A

3 0
4 years ago
What is the difference between center of mass and center of gravity?
sweet [91]

Answer:

Centre of mass is the point at which the distribution of mass is equal in all directions, and does not depend on gravitational field. Centre of gravity is the point at which the distribution of weight is equal in all directions, and does depend on gravitational field.

5 0
3 years ago
Read 2 more answers
The index of refraction for red light in water is 1.331 and that for blue light is 1.340. If a ray of white light enters the wat
kobusy [5.1K]

Answer:

Angle of refraction for red light is 43.01^{\circ}

Angle of refraction for blue light is  42.68^{\circ}    

Explanation:

It is given refractive index for red light is \mu _{red}=1.331

Refractive index of blue light \mu _{blue}=1.340

Angle of incidence i=65.30^{\circ}

According to law of refraction \mu =\frac{sini}{sinr}

For red light 1.331 =\frac{sin65.30^{\circ}}{sinr}

1.331 =\frac{0.908}{sinr}

sinr=0.682

r=43.01^{\circ}

Therefore angle of refraction for red light is 43.01^{\circ}

Similarly for blue light 1.340 =\frac{sin65.30^{\circ}}{sinr}

1.340 =\frac{0.908}{sinr}

sinr=0.677

r = 42.68^{\circ}

Therefore angle of refraction for blue light is  42.68^{\circ}

6 0
3 years ago
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